Hi there, Calle is right here - we do average, then calculate std dev and set the upper and lower bounds for each value.
We use data from ALL available time periods to calculate this (period org unit, data element, option combo) Mind you we should not really debate whether to use standard deviations or not, rather if we should support additional _distributions_ to better handle different kinds of data. We currently use the normal distribution <http://en.wikipedia.org/wiki/Normal_distribution>. Rodolfo - supporting min-max in the Web API is a good idea to allow for third-party tools - feel free to write a blueprint. regards, Lars
_______________________________________________ Mailing list: https://launchpad.net/~dhis2-devs Post to : dhis2-devs@lists.launchpad.net Unsubscribe : https://launchpad.net/~dhis2-devs More help : https://help.launchpad.net/ListHelp
